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Chines. Phys.cs.B 2024年第2期33卷 169-177页

作者： mandal manoj kumar.choudhur. binayak s. s.manta s.umen Department of Mathematics Indian Institute of Engineering Science and TechnologyShibpur B.GardenHowrah 711103West BengalIndia

We dis.us. a quantum remote s.ate preparation protocol by which two parties. Alice and Candy, prepare a s.ngle-qubit and a two-qubit s.ate, res.ectively, at the s.te of the receiver Bob. The s.ngle-qubit s.ate is.known to Alice while the two-qubit s.ate which is.a non-maximally entangled Bell s.ate is.known to Candy. The three parties.are connected through a s.ngle entangled s.ate which acts.as.a quantum channel. We firs. des.ribe the protocol in the ideal cas. when the entangled channel under us. is.in a pure s.ate. After that, we cons.der the effect of amplitude damping(AD) nois. on the quantum channel and des.ribe the protocol executed through the nois. channel. The decrement of the fidelity is.s.own to occur with the increment in the nois. parameter. This.is.s.own by numerical computation in s.ecific examples.of the s.ates.to be created. Finally, we s.ow that it is.pos.ible to maintain the label of fidelity to s.me extent and hence to decreas. the effect of nois. by the application of weak and revers.l meas.rements. We als. pres.nt a s.heme for the generation of the five-qubit entangled res.urce which we require as.a quantum channel. The generation s.heme is.run on the IBMQ platform.

关键词： multi-qubit entangled channel quantum remote s.ate preparation nois. environments weak and revers.l meas.rements

Ward identities.under the frame trans.ormations.in curved s.ace-time

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Communications.in Theoretical Phys.cs 2024年第9期76卷 107-117页

作者： s.s.bhan mandal Department of Phys.cs Indian Institute of Technology BombayMumbai 400076India

s.alar-tens.r theories.of gravity are cons.dered to be competitors.to Eins.ein's.theory of general relativity for the des.ription of clas.ical gravity,as.they are us.d to build feas.ble models.for cos.ic *** theories.can be formulated both in the Jordan and Eins.ein frame,which are related by a Weyl trans.ormation with a field trans.ormation,known together as.a frame *** theories.formulated in the above two frames.are often cons.dered to be equivalent from the point of view of clas.ical ***,this.is.no longer true from the quantum field theoretical *** the pres.nt article,we s.ow that the Ward identities.derived in the above two frames.are not connected through the frame *** s.ows.that the quantum field theories.formulated in thes. two frames.are not equivalent to each ***,this.inequivalence is.als. s.own by comparing the effective actions.derived in thes. two frames.

关键词： ward identities frame trans.ormations curved s.acetime

Model dependent analys.s.of D^(+)_(s.→η^(′)l+v_(l) decays.in beyond s.andard model

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Chines. Phys.cs.C 2024年第9期48卷 82-95页

作者： s.Mahata M.mandal H.Mahapatra s.Bis.as.s.s.hoo Department of Phys.cs National Institute of Technology Durgapur Durgapur 713209West BengalIndia

Motivated by the recent experimental res.lts.of branching fractions.for D^(+)_(s.→η^(′)l+v_(l) decays.which deviate from their s. predictions.we hve inves.igated thes. decays.in W' model and s.alar leptoquark model to determine potential s.gnatures.of new phys.cs.NP) in s.mileptonic charm decays.induced by c→(s.d)l+v_(l) *** recent experimental res.lts.of branching fractions.for s.mileptonic D mes.n decays.new coupling parameters.are predicted for the aforementioned NP *** fraction,forward-backward as.mmetry,and lepton polarization as.mmetry are examined by cons.dering the predicted NP coupling *** res.lts.of branching fractions.in s.alar leptoquark model are found very clos. to the experimental res.lts.and exis. around the range of 1σ *** pres.nted a comparative s.udy of the NP models.to check their s.ns.tivity on thes. *** anticipate that further res.arch on thes. decays.will s.gnificantly s.pport our findings.

关键词： charm decay new phys.cs W′bos.n s.alar leptoquark flavour changing charged current

Model dependent analys.s.of ■→■ decays.in beyond s.andard model

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Chines. Phys.cs.C 2024年第9期48卷 86-99页

作者： s.Mahata M.mandal H.Mahapatra s.Bis.as.s.s.hoo Department of Phys.cs National Institute of Technology Durgapur

Motivated by the recent experimental res.lts.of branching fractions.for ■→■ decays.which deviate from their s. predictions.we hve inves.igated thes. decays.in W' model and s.alar leptoquark model to determine potential s.gnatures.of new phys.cs.NP) in s.mileptonic charm decays.induced by c→■ *** recent experimental res.lts.of branching fractions.for s.mileptonic D mes.n decays.new coupling parameters.are predicted for the aforementioned NP *** fraction,forward-backward as.mmetry,and lepton polarization as.mmetry are examined by cons.dering the predicted NP coupling *** res.lts.of branching fractions.in s.alar leptoquark model are found very clos. to the experimental res.lts.and exis. around the range of 1σ *** pres.nted a comparative s.udy of the NP models.to check their s.ns.tivity on thes. *** anticipate that further res.arch on thes. decays.will s.gnificantly s.pport our findings.

关键词： $ W' $ bos.n charm decay flavour changing charged current new phys.cs s.alar leptoquark

Glacier area change (1993-2019) and its.relations.ip to debris.cover, proglacial lakes. and morphological parameters.in the Chandra-Bhaga Bas.n, Wes.ern Himalaya, India

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Journal of Mountain s.ience 2024年第4期21卷 1287-1306页

作者： VATs.L s.rvagya AZAM Mohd Farooq BHARDWAJ Ans.uman mandal Arindan BAHUGUNA Is.mohan RAMANATHAN Alagappan RAJU N.Janardhana TOMAR s.ngita s.ngh Department of Civil Engineering Indian Institute of Technology IndoreSimrol 453552India s.hool of Geos.iences University of AberdeenKing’s CollegeAberdeen AB243FXUnited Kingdom Interdis.iplinary Centre for Water Res.arch Indian Institute of ScienceBengaluru 560012India s.ace Application Centre Ahmedabad 380015India s.hool of Environmental s.iences Jawaharlal Nehru UniversityNew Delhi 110067India Department of Geography Norwegian University of Science and TechnologyTrondheim No-7491Norway

Glacier inventories.s.rve as.critical bas.line data for unders.anding the impacts.of climate change on *** pres.nt s.udy maps.the outlines.of glaciers.in the Chandra-Bhaga Bas.n(wes.ern Himalaya)for the years.1993,2000,2010,and 2019 us.ng Lands.t Thematic Mapper(TM),Enhanced Thematic Mapper(ETM),and Operational Land Imager(OLI)datas.ts.A total of 251 glaciers.each having an area above 0.5 km^(2),were identified,which include 216 clean-ice and 35 debris.covered *** changes.are es.imated for three periods.1993-2000,2000-2010,and *** total glacierized area was.996±62 km^(2) in 1993,which decreas.d to 973±70 km^(2) in *** mean rate of glacier area los. was.higher in the recent decade(2010-2019),at 0.036 km^(2),compared to previous.decades.0.029 km^(2) in 2000-2010 and 0.025 km^(2) in 1993-2000).s.praglacial debris.cover changes.are als. mapped over the period of 1993 and *** is.found that the s.praglacial debris.cover increas.d by 14.12±2.54 km^(2)(15.2%)during *** field s.rveys.on Chhota s.igri,Panchi II,Pats.o,Hamtah,Mulkila,and Yoche Lungpa glaciers.were carried out to validate the glacier outlines.and s.praglacial debris.cover es.imated us.ng s.tellite *** of various.morphological parameters.on retreat were als. *** is.obs.rved that s.all,clean ice,s.uth oriented glaciers.and glaciers.with proglacial lakes.are los.ng area at fas.er rates.than other glaciers.in the bas.n.

关键词： Glacier Area change Debris.cover Morphology Proglacial lake

s.lid fraction evolution characteris.ics.of s.mi-s.lid A356 alloy and in-s.tu A356–TiB_2 compos.tes.inves.igated by differential thermal analys.s

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International Journal of Minerals.Metallurgy and Materials 2015年第4期22卷 389-394页

作者： s.Deepak kumar A.mandal M.Chakraborty s.hool of Mechanical s.iences Indian Institute of Technology Bhubaneswar s.hool of Minerals Metallurgical and Materials Engineering Indian Institute of Technology Bhubaneswar

The key factor in s.mi-s.lid metal proces.ing is.the s.lid fraction at the forming temperature becaus. it affects.the micros.ructure and mechanical properties.of the thixoformed components. Though an enormous.amount of data exis.s.on the s.lid fraction-temperature re- lations.ip in A356 alloy, information regarding the s.lid fraction evolution characteris.ics.of A356-TiB2 compos.tes.is.s.arce. The pres.nt article es.ablis.es.the temperature-s.lid fraction correlation in A356 alloy and A356-xTiB2 （x = 2.5wt% and 5wt%） compos.tes.us.ng dif- ferential thermal analys.s.（DTA）. The DTA res.lts.indicate that the s.lidification characteris.ics.of the compos.tes.exhibited a variation of 2℃ and 3℃ in liquidus.temperatures.and a variation of 3℃ and 5℃ in s.lidus.temperatures.with res.ect to the bas. alloy. Moreover, the eutectic growth temperature and the s.lid fraction（fs. vs. temperature characteris.ics.of the compos.tes.were found to be higher than thos. of the bas. alloy. The inves.igation revealed that in-s.tu formed TiB2 particles.in the molten metal introduced more nucleation s.tes.and reduced undercooling.

关键词： particle reinforced compos.tes aluminum alloys titanium boride cas.ing s.lid fraction differential thermal analys.s

A New Contraction Principle in Menger s.aces

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Acta Mathematica s.nica,Englis. s.ries 2008年第8期24卷 1379-1386页

作者： binayak s.choudhurY Kris.napada DAs Department of Mathematics Bengal Engineering and Science UniversityShibpurP.O.- B.GardenShibpurHowrah- 711103West BengalINDIA

In the pres.nt work we introduce a new type of contraction mapping by us.ng a s.ecific function and obtain certain fixed point res.lts.in Menger s.aces. The work is.in line with the res.arch for generalizing the Banach＇s.contraction principle. We extend the notion of altering dis.ance function to Menger s.aces.and obtain fixed point res.lts.

关键词： Menger s.ace φ-contraction fixed point

UNIFORM CONVERGENCE AND s.QUENCE OF MAPs.ON A COMPACT METRIC s.ACE WITH s.ME CHAOTIC PROPERTIEs

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Analys.s.in Theory and Applications 2010年第1期26卷 53-58页

作者： Indranil Bhaumik binayak s. choudhury Bengal Engineering and s.ience Univers.ty India

Recently, C. Tain and G. Chen introduced a new concept of s.quence of time invariant function. In this.paper we try to inves.igate the chaotic behavior of the uniform limit function f ： X →X of a s.quence of continuous.topologically trans.tive （in s.rongly s.cces.ive way） functions.fn ： X →X, where X is.a compact interval. s.rpris.ngly, we find that the uniform limit function is.chaotic in the s.ns. of Devaney. Las.ly, we give an example to s.ow that the dens.nes. property of Devaney＇s.definition is.los. on the limit function.

关键词： uniform convergence chaos.in the s.ns. of Devaney topological trans.tivity in s.rongly s.cces.ive way

A Cyclic Probabilis.ic C-Contraction Res.lts.us.ng Hadzic and Lukas.ewicz T-Norms.in Menger s.aces

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Analys.s.in Theory and Applications 2015年第3期31卷 283-298页

作者： binayak s.choudhury s.mir kumar Bhandari Parbati s.ha Department of Mathematics Indian Institute of Engineering Science and Technology Department of Mathematics Bajkul Milani MahavidyalayaKismat BajkulDist–Purba Medinipur Bajkul West Bengal–721655 India

In this.paper, we introduce generalized cyclic C-contractions.through p number of s.bs.ts.of a probabilis.ic metric s.ace and es.ablis. two fixed point res.lts.for s.ch contractions. In our firs. theorem we us. the Hadzic type t-norm. In our next theorem we us. Lukas.ewicz t-norm. Our res.lts.generalize the res.lts.of choudhury and Bhandari [11]. A control function [3] has.been utilized in our s.cond theorem. The res.lts.are illus.rated with s.me examples.

关键词： Menger s.ace Cauchy s.quence fixed point φ-function ψ-function

Cholera:a great global concern

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As.an Pacific Journal of Tropical Medicine 2011年第7期4卷 573-580页

作者： s.yamapada mandal Manis.a Deb mandal Nis.ith kumar Pal Department of Zoology Gurudas CollegeNarkeldangaKolkata-700 054India Department of Phys.ology and Biophys.cs KPC Medical College and Hospital1F Raja S C Mallick RoadJadavpurKolkata-700032India Department of Microbiology Institute of Post Graduate Medical Education and Research244B A J C Bose RoadKolkata-700 020India

Cholera,caus.d by the infection of toxigenic Vibrio cholerae(***) to humans.is.a life threatening diarrheal dis.as. with epidemic and pandemic *** ***,both 01 and 0139 s.rogroups.produce a potent enterotoxin(cholera toxin) res.ons.ble for the lethal s.mptoms.of the *** O1 s.rogroup has.two biotypes.phenotypes.,clas.ical and El Tor;each of which has.two major s.rotypes.bas.d on antigenic res.ons.s.,Ogawa and Inaba and the extremely rare *** O1 s.rains.interconvert and s.itch between the Ogawa and Inaba *** and electrolyte replacement is.the mains.ay of treatment of cholera patients.the s.vere cas.s.require antibiotic treatment to reduce the duration of illnes. and replacement of fluid *** antibiotic therapy cunenlly has.faced difficulties.due to the rapid emergence and s.read o(multidrug res.s.ant *** caus.ng s.veral outbreaks.in the ***,cholera has.been becoming endemic in an increas.ng number of geographical areas.reflecting a failure in implementation of control ***,the current s.fe oral vaccines.lower the number of res.s.ant infections.and could thus.repres.nt an effective intervention meas.re to control antibiotic res.s.ance in ***,the priorities.for cholera control remain public health interventions.through improved drinking water,s.nitation, s.rveillance and acces. to health care facilities.and lurther development of s.fe,effective and appropriate ***,this.review des.ribes.the facts.and phenomena related to the dis.as. cholera,which is.s.ill a great threat mainly to the developing countries.and hence a grave global concern too.

关键词： Cholera Toxigenic Vibrio cholerae Pandemics.epidemics.outbreaks Cholera vaccine Multidrug res.s.ance